7221分栅分光光度计是一种广泛应用于多个领域的光学分析仪器。它采用先进的光学系统和高精度的检测技术，能够对物质的光学性质进行精确测量。该仪器的主要特点包括高性能的1200L/mm光栅和C-T单色器结构，这种设计确保了仪器具有高分辨率、高光度线性以及低杂散光。其波长范围为340~1000nm，波长准确度达到±2nm，波长重复性为1nm，光谱带宽为4nm。此外，7221分栅分光光度计摒弃了传统的指针模式，采用液晶数字显示，提高了测试精度和稳定性。它广泛适用于冶金、化工、机械、医学、生物、农业、环保、教学等行业和领域。

The 7221 Grating Spectrophotometer is an optical analytical instrument with a wide range of applications. It features an advanced optical system and high-precision detection technology for accurate measurement of the optical properties of substances. The instrument is equipped with a high-performance 1200L/mm grating and a C-T monochromator structure, which ensures high resolution, high photometric linearity, and low stray light. It has a wavelength range of 340-1000nm, with a wavelength accuracy of ±2nm and a wavelength repeatability of 1nm. The spectral bandwidth is 4nm. Additionally, the 7221 Grating Spectrophotometer has abandoned the traditional pointer mode in favor of a digital LCD display, enhancing measurement accuracy and stability. It is widely used in industries such as metallurgy, chemistry, machinery, medicine, biology, agriculture, environmental protection, and education.